What is the meaning of the following traffic sign?

- No entry for private vehicles.
- Correct answer: No entry for all motor vehicles, except for motorcycles without a side-car.
- No parking for all vehicles.
- No entry for all vehicles, except for private passenger vehicles.
Why this is the answer
The correct answer in the official bank: No entry for all motor vehicles, except for motorcycles without a side-car.
The sign forbids entry to every motor vehicle except a motorcycle without a side-car. So the ban is not limited to private vehicles, and it does not allow a private passenger vehicle to enter. The sign deals with entry, not parking.